The Great River Race is London’s River Marathon. It’s a spectacular boat race covering 21.6 miles from Millwall in the East to Richmond in the West, travelling under London’s famous bridges. It appeals to every level of competitor, from dedicated athletes who come every year to beat their records to those who simply enjoy laughter, fancy dress and making money for their charity. It’s a great fun day out for both competitors and spectators.

https://greatriverrace.org.uk/